adjacency               Create adjacency matrix
hits                    Hyperlink-induced topic search
make_family_id          Construct family id vector from pedigree trio
                        information
make_parental_chain     Construct parental chain id vector from
                        pedigree trio information
mksib                   Generate variables (or lists) of siblings from
                        a file of ids of persons and their father and
                        mother.
validate_trio_consistency
                        Validate pedigree trio information consistency
